For a statistics assignment Amanda collected data on restaurant bills for tables.  She categorized the price into 3 categories and also recorded whether or not alcohol was purchased.  The results are shown in the table below.​​​​​​​​​​​     Under $30 $30-$60 Over $60 Alcohol was purchased 23 58 47 No alcohol was purchased 37 65 41

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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. For a statistics assignment Amanda collected data on restaurant bills for tables.  She categorized the price into 3 categories and also recorded whether or not alcohol was purchased.  The results are shown in the table below.​​​​​​​​​​​

 

 

Under $30

$30-$60

Over $60

Alcohol was purchased

23

58

47

No alcohol was purchased

37

65

41

 

 

 

 

a) How many total tables did Amanda observe/record data for?

 

 

b) What proportion of the tables had bills over $60?

 

 

c) What proportion of the tables had alcohol as part of the purchase/bill?

 

 

 

d) Of the tables where alcohol was purchased, what proportion had bills over $60?

 

 

e) Of the tables with bills under $30, what proportion did NOT purchase any alcohol?

 

 

f) What proportion of the tables had $30-$60 bills AND had alcohol?
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